Gas-regulating device.



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NTTED STATES CHARLES E. wrRrH AND wiLLiAM w. BRADLEY, or wATERBURY, ooN- NECTICUT, ASSIGNORS TO THE PLUME AND ATWOOD MFG. CO., OF WATERBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

GAS-REGULATING DEVICE.

Specification of Letters Patent.

Patented Feb. 13, 1906.

To all whom t Wwty concern:

Be it known that we, CHARLES E. WIRTH and WILLIAM W. BRADLEY, citizens of the United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented an Improvement in Gas Regulating Devices, of which the following is a speciiication.

Our invention relates to certain new and useful improvements in burners of the Bunsen type, especiallyadapted for use with incandescent or Welsbach mantles; and the object of our invention is to efficiently and quickly regulate the supply of gas either between and maximum quantities or between the closed-off condition and a maximum supply.

Our invention consists of a nipple or member adapted to be connected in a fixed rela tion to a gas tube or pipe and a part connected thereto and revoluble thereon and including a cap and Bunsen tube with openings or gas-passages in-the top of the nipple and top of the cap that are made eccentric to the axial center of the Bunsen tube, so that in one position they will coincide for a full open# ing and clear passage for the as, and when the movable memberis turne either to one side or the other the openings will gradually lessen either to a minimum aperture, which will remain open for a minimum supply or to an entirely closed-off condition, which will prevent any gas passing through If the extent of eccentricity o the axial center is sufficient, the opening will be entirely closed, or if suiiiciently near the center a minimum size of aperture will always remain open. To4in sure a gas-tight and suitable connection of the revoluble part upon the nipple or Amember adapted to be connected in a fixed relation to a gas tube or pipe, we provide agroove on the one part and a rib on the other and means for establishing sufficient friction between the parts so that they will remain in any position to which they may be turned without accidental shifting.

In the drawings, Figure l is a vertical seotion representing one form of device of our improvement. Figs. 2 and 3 are sectional plan views at the line :1; a; of Fig. 1. Fig. 4 is an elevation, and Fig. 5 a vertical section at terior of the nipple a and provided with a A groove 6 in the outer surface, which has a rib in the inner surface fitting the groove 4 of the nipple a. These parts are thus connected, axial movement is prevented, a gas tight joint is established, but a revoluble movement of the one part on the other may be effected. This cap is provided with a gasaperture 7 and with a base-flange 8.

c is the Bunsen tube, d a hood connected to the lower end of the Bunsen tube and secured by a circumferential iiange 9 to the outer end of the air-distributer e, this air-distributer e in turn surrounding and being connected to the iiange 8 of the cap b.

The gas-aperture 5 in the nipple c and the gas-aperture 7 in the cap b are made eccentric to the axial center of the Bunsen tube, cap, and nipple. Fig. 2 shows a degree of eccentricity which when the apertures are in direct opposition closes off the opening, so as to prevent any escape of gas from the gaspipe into the hood and Bunsen tube, while Fig'. 3 shows a degree or extent of eccentricity off the axial center such as will provide for a minimum aperture when the gas-apertures 5 and 7 are in opposition. lThis position of opposition is shown in Fig. 3, while in Fig. 2 a minimum aperture substantially equal to the minimum aperture shown in Fig. 3 is shown appreciably before the said gas apertures come into opposition. It is therefore appar ent that in one position of the parts the gasapertures 5 and 7 coincide for a full opening and clear passage-way for the gas from the gas-pipe into the hood and Bunsen tube to meet the incoming air through the apertures in the air-distributer e, so that the air and gas are mixed in the hood and Bunsen tube to be burned at the upper end of the tube c.

IOO

In Fig. 1 the cap l) is made to very closely surround and fit the upper end of the nipple a so closely that there is sufficient friction between the parts in turning to maintain them in any position to which they may be moved but we do not limit ourselves to such close lit, because according to Figs. 4 and 5 we may provide in one side or in opposite sides of the cap b one or more slots 10, preferably of curved form, so as to provide a tongue b', which can be forced slightly inward to provide the necessary friction and bearing against-the exterior of the nipple a where the fit is otherwise, except at the groove 4 of the nipple and rim of the cap, comparatively loose. We prefer in this modified -fo'rm of our invention to form the slots l0 in opposite cap closely surrounding the same, vsaid parts being each provided in the adjacent top portions With a single openin or gas-passage of appreciable area at one si e of the axial center and one Wall of each of which openings.

agrees with the axial center of thel nipple for regulating the supply of gas by the eccentricr relation of one opening to the other. v

2. In a as-regulating device,.a nipple or member a apted to be connected in a fixed relation to a gas tube or pipe and a revoluble cap closely surrounding the same, said parts being each provided in the adjacent top portions with a single opening or gas-passage of appreciable area at one side of the axial center and one wall of each of which yopenings agrees with the axial center of the nipple for regulating the supply ofgas by the eccentricV relation of one opening to the other Iand means for connecting the nipple and revoluble cap to permit a revoluble movement but prevent accidental separationlongitudinally.

3. In a gasregulating device, a nipple or `member adapted to be connected in a fixed relation to a gas tube or pipe and a cap surrounding the same, said parts being provided with openings or gas-passages in the top ofthe nipple and top of the cap that are made eccentric to the axial center of the said nipple and cap, the nipple being provided nearv its upper end with a circumferential groove and the cap tting over the same provided with a circumferential groove in the outer surface and consequent rib on the inner surface fitting into the groove of the nipple and so conseparation but providing for a revoluble movement of the cap upon the nipple and a gas-tight joint, and means adapted to form a frictional contact of the cap upon the nipple, permitting the revoluble movement but preventing accidental shifting of the parts.

4. In a gas-regulating device, a nipple or member adapted to `be connected in a fixed relation to a gas tube or pipe and a cap surrounding the same, said parts being provided with openings or gas-passages in the top of the nipple and top of the cap that are made eccentric to the axial center of the said nipple and cap, the nipple being provided near its upper end with a circumferential groove and the cap 'fitting over the same provided with a .circumferential groove in the outer surface and consequent rib on the inner surface fitting into the groove of the nipple and so connecting the parts to prevent longitudinal separation but providing for 'a .revoluble movement of the cap upon the nipple and a gas-tight joint, and one or more tongues provided in the cap by slotting the same so that the tongues bear frictionally against the surface of the nipple.

A 5. In a gas-regulating device, a nipple or member adapted to be connected in a fixed relation to a gas tube or pipe and a cap surrounding the same, said parts being provided with openings or gas-passages in the top of Athe nipple and top ofthe cap, the nipple being provided near its upper end with a circumferential groove and the cap fitting over the same provided with a circumferential groove in the outer surface and eonsequentrib on the inner surface fitting into the groove of the nipple and so eonnectingthe parts to prevent longitudinal separation but providing.

for a revoluble movement ofthe cap upon the nipple and agas-tight joint.

6. In a gas-regulatingdevice, a nipple or IOO member adapted tobe connected. in a fixed relation to a gas tube or pipe and a cap surrounding the same, said parts being provided with openings or gas-passages-in the top of the nipple and top of the cap, the nipple being provided near its upper end with a cir-v cumferential groove and the cap fitting over the same provided with a circumferentiall groove in the outer surface and consequent rib on the inner surface fitting into the groove of the nipple and so connecting theparts to prevent longitudinal separation but providing for a revoluble movement of the cap upon the nipple and a gas-tight joint, and one orv more tongues provided in the capby slotting IIO IZO

the same so that the tongues bear frictionally against the surface of the nipple.

t7. In a as-regulating device, a nipple or member a apted to be connected in a fixed cap closely surrounding the same, said parts being provided in the top portions with open.-

ings of appreciable area, one of said openings being at one side ofthe axial center, for regulating the supply ci gas by the eccentric relation of one opening to the other, and means for connecting the nipple and revoluble cap to permit\a revoluble movement but prevent accidental separation longitudinally.

8. In a gas-regulating device, a nipple or member adapted to be connected in a iixed relation to a gas tube or pipe and a cap surrounding the same, said parts being provided with openings in the top portions, one oi said openings being eccentric to the axial center of the said nipple and cap, the nipple being provided near its upper end with a circumferential groove and the cap iitting over the same provided with a circumferential groove in the outer surface and consequent rib on the inner surface fitting into the groove of the nipple and so connecting the parts to prevent longitudinal separation but providing for a revoluble movement of the cap upon the nipple and a gas-tight joint.

9. A gas-regulating device comprising a Bunsen tube, a hood, an air-distributer and a cap connected together and forming a unitary revoluble member, a nipple or member received at one end within the cap and at its other end interiorly threaded and adapted to be screwed upon the upper end of a gas tube or pipe into a iixed relationv therewith, said nipple being closed at its upper end adjacent to the top of the cap, said nipple and said cap being provided with openings one oi which is made eccentric to the axial center of the Bunsen tube, capand nipple.

10. A gas-regulating device, comprising a Bunsen tube, a hood, an air-distributer and a cap connected together and forming a unitary revoluble member, a nipple or member received at. one end within the cap and at its other end interiorly threaded and adapted to be screwed upon the upper end of a gas tube or pipe into a fixed relation therewith, said nipple being closed at its upper end adjacent to the top ofthe cap, said nipple and said cap being provided with openings one of which is made eccentric to the axial center ofthe Bunsen tube, cap and nipple, and means for connecting the cap and nipple so as to provide a .gas-tight joint to prevent longitudinal movement but provide for the revoluble movement'. Signed by us this 22d day of November, 1904.

CHAS. E. WIRTH. W. W. BRADLEY.

Witnesses:

J. L. SCOTT, B L. NETTLETON. 

